Capacity of full frame DCT image watermarks

Author

Barni, Mauro ; Bartolini, Franco ; Rosa, Alessia De ; Piva, Alessandro

Author_Institution

Dept. of Inf. Eng., Siena Univ., Italy

Volume

9

Issue

8

fYear

2000

fDate

8/1/2000 12:00:00 AM

Firstpage

1450

Lastpage

1455

Abstract

The evaluation of the number of bits that can be hidden within an image through digital watermarking is a crucial topic, which has been addressed only for additive watermarks. The evaluation of watermark capacity is very important because it allows to put a theoretical upper bound on the amount of information that can be hidden into an image by a given watermarking procedure, regardless of the watermark extraction technique. It is the purpose of this work to suggest a methodology for the evaluation of the watermark capacity in a nonadditive, non-Gaussian framework, and to discuss the results we obtained by applying it to a set of standard images

Keywords

channel capacity; copy protection; copyright; discrete cosine transforms; image coding; additive watermarks; copyright protection; digital watermarking; full frame DCT image watermarks; nonadditive non-Gaussian framework; standard images; watermark capacity; AWGN; Channel capacity; Copyright protection; Data mining; Discrete cosine transforms; Gaussian noise; Pixel; Signal processing; Upper bound; Watermarking;

fLanguage

English

Journal_Title

Image Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7149

Type

jour

DOI

10.1109/83.855442

Filename

855442